Hydration Reaction with water molecules or swelling in the presence of water Hydrolysis Reaction with water molecules sometimes accelerated by acid or base resulting in breakage of a chemical bond Hydrolyzate The breakdown product of a reactive sizing agentleading to a net decrease in efficiency and possible deposit problems Hydrogen bond A medium-strength, directional attraction between oxygen atoms and some others with hydrogen atoms bonded to other oxygens Hydrophobic Water-hating Hydrophile Something that loves the water phase, often due to the presence of oxygen atoms or charged chemical groups Inorganic Not mainly comprised of carbon, hydrogen, and oxygen Interfering substance Something in the aqueous mixture that interferes with the function of papermaking additives such as retention aidssizing agentsstrength agentsetc.
Blind Folio A page that is counted in the overall counting of pages, but the number is not printed on the page.
Composite Image Multiple pictures images placed together to form a single, combined picture. Next Prev Set the paper between the felts on a flat surface to air-dry. Chemical Pulp Wood fiber cooked using chemicals producing a pulp used to manufacture numerous printing papers and paperboard products.
Refining can cause the softwood fibre tube to collapse resulting in undesirable properties in the sheet. The deckle leaves the edges of the paper slightly irregular and wavy, called "deckle edges", one of the indications that the paper was made by hand.
The deckle is the upper portion, which determines the shape and size of the sheet of paper the ragged edges seen in handmade papers are called deckle edges.